xp-dev.com Git - RRRRHHHH_Code/blob - ruralHouses/src/dataAccess/DB4oManager.java

   1 package dataAccess;
   2
   3 import java.io.File;
   4 //import java.util.Enumeration;
   5 //import java.util.Vector;
   6 import java.rmi.RemoteException;
   7 import java.util.Date;
   8 import java.util.List;
   9 import java.util.ListIterator;
  10 import java.util.Vector;
  11
  12 import com.db4o.Db4oEmbedded;
  13 import com.db4o.ObjectContainer;
  14 import com.db4o.ObjectSet;
  15 import com.db4o.config.EmbeddedConfiguration;
  16 import com.db4o.cs.Db4oClientServer;
  17 import com.db4o.cs.config.ClientConfiguration;
  18 import com.db4o.query.Predicate;
  19
  20 import configuration.ConfigXML;
  21 import domain.Account;
  22 import domain.Administrator;
  23 import domain.Booking;
  24 import domain.Client;
  25 import domain.HouseFeatures;
  26 import domain.Offer;
  27 //import dataModel.Offer;
  28 import domain.Owner;
  29 import domain.RuralHouse;
  30 import exceptions.OfferCanNotBeBooked;
  31 import exceptions.OverlappingOfferExists;
  32
  33 public class DB4oManager {
  34
  35         private static ObjectContainer db;
  36         private static EmbeddedConfiguration configuration;
  37         private static ClientConfiguration configurationCS;
  38         private int bookingNumber = 0; // if it is "static" then it is not
  39                                                                         // serialized
  40         private int offerNumber = 0; // if it is "static" then it is not serialized
  41         private static DB4oManager theDB4oManager = null;
  42
  43         private static DB4oManagerAux theDB4oManagerAux;
  44
  45         static ConfigXML c;
  46
  47         private DB4oManager() throws Exception {
  48                 theDB4oManagerAux = new DB4oManagerAux(0, 0);
  49                 c = ConfigXML.getInstance();
  50                 System.out.println("Creating DB4oManager instance => isDatabaseLocal: "
  51                                 + c.isDatabaseLocal() + " getDatabBaseOpenMode: "
  52                                 + c.getDataBaseOpenMode());
  53
  54                 if ((c.getDataBaseOpenMode().equals("initialize"))
  55                                 && (c.isDatabaseLocal()))
  56                         new File(c.getDb4oFilename()).delete();
  57
  58                 if (c.isDatabaseLocal()) {
  59                         openDB();
  60                         System.out.println("DataBase opened");
  61                 } else // c.isDatabaseLocal==false
  62                 {
  63                         openSDB();
  64                         System.out.println("Remote DataBase opened");
  65                 }
  66                 if (c.getDataBaseOpenMode().equals("initialize")) {
  67                         initializeDB();
  68                         System.out.println("DataBase initialized");
  69                 } else // c.getDataBaseOpenMode().equals("open")
  70
  71                 {
  72                         ObjectSet<DB4oManagerAux> res = db
  73                                         .queryByExample(DB4oManagerAux.class);
  74                         ListIterator<DB4oManagerAux> listIter = res.listIterator();
  75                         if (listIter.hasNext())
  76                                 theDB4oManagerAux = (DB4oManagerAux) res.next();
  77                 }
  78         }
  79
  80         private static void openDB() {
  81                 configuration = Db4oEmbedded.newConfiguration();
  82                 configuration.common().activationDepth(c.getActivationDepth());
  83                 configuration.common().updateDepth(c.getUpdateDepth());
  84                 configuration.common().objectClass(Owner.class).cascadeOnDelete(true);
  85                 configuration.common().objectClass(Booking.class).cascadeOnDelete(true);
  86                 configuration.common().objectClass(RuralHouse.class)
  87                                 .cascadeOnDelete(true);
  88                 configuration.common().objectClass(Account.class).cascadeOnDelete(true);
  89                 configuration.common().objectClass(Offer.class).cascadeOnDelete(true);
  90                 configuration.common().objectClass(Account.class).cascadeOnUpdate(true);
  91                 db = Db4oEmbedded.openFile(configuration, c.getDb4oFilename());
  92         }
  93
  94         private void openSDB() {
  95
  96                 configurationCS = Db4oClientServer.newClientConfiguration();
  97                 configurationCS.common().activationDepth(c.getActivationDepth());
  98                 configurationCS.common().updateDepth(c.getUpdateDepth());
  99                 configurationCS.common().objectClass(Owner.class).cascadeOnDelete(true);
 100                 db = Db4oClientServer.openClient(configurationCS, c.getDatabaseNode(),
 101                                 c.getDatabasePort(), c.getUser(), c.getPassword());
 102
 103         }
 104
 105         class DB4oManagerAux {
 106                 int bookingNumber;
 107                 int offerNumber;
 108
 109                 DB4oManagerAux(int bookingNumber, int offerNumber) {
 110                         this.bookingNumber = bookingNumber;
 111                         this.offerNumber = offerNumber;
 112                 }
 113         }
 114
 115         public static DB4oManager getInstance() throws Exception {
 116                 if (theDB4oManager == null)
 117                         theDB4oManager = new DB4oManager();
 118                 return theDB4oManager;
 119         }
 120
 121         public void initializeDB() {
 122
 123                 try {
 124                         Owner jon = new Owner("Jon", "1349 5677 21 2133567777",
 125                                         "Jon@gmail.com");
 126                         Owner alfredo = new Owner("Alfredo", "4144 0087 23 9700002133",
 127                                         "alfredo@gmail.com");
 128                         jon.addRuralHouse("Ezkioko", "Ezkioko etxea", "Beatriz", 3, 3, 3,
 129                                         3, 3);
 130                         jon.addRuralHouse("Eskiatze", "Eskiatzeko etxea", "Guazate", 4, 4,
 131                                         4, 4, 4);
 132                         alfredo.addRuralHouse("Aitonako", "Casa del abuelo", "Vegas", 5, 5,
 133                                         5, 5, 5);
 134
 135                         alfredo.addRuralHouse("Murgoitz", "", "Cedro", 6, 6, 6, 6, 6);
 136                         Account jonAcc = new Account("1", "1", jon);
 137                         Account alfredoAcc = new Account("userAlfredo", "passAlfredo",
 138                                         alfredo);
 139
 140                         Account admin = new Account("admin", "admin", true);
 141                         db.store(Administrator.getInstance());
 142                         db.store(jonAcc);
 143                         db.store(alfredoAcc);
 144                         db.store(admin);
 145                         db.commit();
 146                 } finally {
 147                         db.close();
 148                 }
 149         }
 150
 151         public void deleteDB() {
 152
 153                 if (c.isDatabaseLocal() == false)
 154                         openSDB();
 155                 else
 156                         openDB();
 157
 158                 try {
 159                         Owner proto = new Owner(null, null, null);
 160                         ObjectSet<Owner> result = db.queryByExample(proto);
 161                         while (result.hasNext()) {
 162                                 Owner o = (Owner) result.next();
 163                                 System.out.println("Deleted owner: " + o.toString());
 164                                 db.delete(o);
 165                         }
 166                         db.commit();
 167                 } finally {
 168                         db.close();
 169                 }
 170         }
 171
 172         public Offer createOffer(RuralHouse ruralHouse, Date firstDay,
 173                         Date lastDay, float price) throws RemoteException, Exception {
 174                 Offer o = null;
 175
 176                 if (c.isDatabaseLocal() == false)
 177                         openSDB();
 178                 else
 179                         openDB();
 180
 181                 try {
 182
 183                         RuralHouse proto = new RuralHouse(ruralHouse.getHouseName(), null,
 184                                         null, null, null);
 185                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 186                         RuralHouse rh = (RuralHouse) result.next();
 187                         o = rh.createOffer(theDB4oManagerAux.offerNumber++, firstDay,
 188                                         lastDay, price);
 189                         db.store(theDB4oManagerAux); // To store the new value for
 190                                                                                         // offerNumber
 191                         db.store(o);
 192                         db.commit();
 193
 194                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 195                         System.out
 196                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createOffer");
 197                 } finally {
 198                         db.close();
 199                 }
 200                 return o;
 201         }
 202
 203         public void deleteOffer(Offer offer) throws RemoteException, Exception {
 204                 if (c.isDatabaseLocal() == false)
 205                         openSDB();
 206                 else
 207                         openDB();
 208
 209                 try {
 210                         ObjectSet<Offer> of = db.queryByExample(offer);
 211                         RuralHouse rh = of.get(0).getRuralHouse();
 212                         System.out.println(rh.getAllOffers().remove(of.get(0)));
 213                         db.store(rh);
 214                         db.commit();
 215
 216                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 217                         System.out
 218                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createOffer");
 219                 } finally {
 220                         db.close();
 221                 }
 222         }
 223
 224         public Vector<Offer> getRHsOffer(String name) {
 225                 if (c.isDatabaseLocal() == false)
 226                         openSDB();
 227                 else
 228                         openDB();
 229
 230                 try {
 231                         RuralHouse rh = (RuralHouse) db.queryByExample(
 232                                         new RuralHouse(name, null, null, null, null)).get(0);
 233                         Offer proto = new Offer(0, rh, null, null, 0);
 234                         ObjectSet<Offer> result = db.queryByExample(proto);
 235                         return new Vector<Offer>(result);
 236                 } finally {
 237                         db.close();
 238                 }
 239         }
 240
 241         public Administrator getAdminData() {
 242
 243                 if (c.isDatabaseLocal() == false)
 244                         openSDB();
 245                 else
 246                         openDB();
 247
 248                 try {
 249
 250                         List<Administrator> admL = db.query(new Predicate<Administrator>() {
 251                                 private static final long serialVersionUID = 1L;
 252
 253                                 public boolean match(Administrator admin) {
 254                                         return true;
 255                                 }
 256                         });
 257
 258                         return admL.get(0);
 259                 } finally {
 260                         db.close();
 261
 262                 }
 263
 264         }
 265
 266         public void storeAdmin() {
 267
 268                 if (c.isDatabaseLocal() == false)
 269                         openSDB();
 270                 else
 271                         openDB();
 272                 try {
 273
 274                         List<Administrator> admL = db.query(new Predicate<Administrator>() {
 275                                 /**
 276                                  *
 277                                  */
 278                                 private static final long serialVersionUID = 1L;
 279
 280                                 public boolean match(Administrator admin) {
 281                                         return true;
 282                                 }
 283                         });
 284
 285                         admL.get(0).setAddRequest(
 286                                         Administrator.getInstance().getAddRequest());
 287                         admL.get(0).setRemoveRequest(
 288                                         Administrator.getInstance().getRemoveRequest());
 289                         admL.get(0).setNewOwnerRequest(
 290                                         Administrator.getInstance().getNewOwnerRequest());
 291
 292                         db.commit();
 293
 294                 } catch (Exception e) {
 295
 296                 } finally {
 297                         db.close();
 298                 }
 299
 300         }
 301
 302         /**
 303          * This method creates a book with a corresponding parameters
 304          *
 305          * @param First
 306          *            day, last day, house number and telephone
 307          * @return a book
 308          */
 309         public Vector<Booking> createBooking(RuralHouse ruralHouse, Date firstDate,
 310                         Date lastDate, Client cl) throws OfferCanNotBeBooked {
 311
 312                 if (c.isDatabaseLocal() == false)
 313                         openSDB();
 314                 else
 315                         openDB();
 316
 317                 Vector<Booking> book = new Vector<Booking>();
 318
 319                 try {
 320
 321                         if (c.isDatabaseLocal() == false)
 322                                 openSDB();
 323
 324                         RuralHouse proto = new RuralHouse(ruralHouse.getHouseName(), null,
 325                                         ruralHouse.getDescription(), ruralHouse.getDistrict(), null);
 326                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 327                         RuralHouse rh = (RuralHouse) result.next();
 328
 329                         Offer offer;
 330                         offer = rh.findOffer(firstDate, lastDate);
 331
 332                         if (offer != null) {
 333                                 offer.createBooking(theDB4oManagerAux.bookingNumber++, cl);
 334                                 db.store(theDB4oManagerAux); // To store the new value for
 335                                                                                                 // bookingNumber
 336
 337                                 db.store(offer);
 338                                 db.commit();
 339                                 book = offer.getBookings();
 340
 341                         }
 342
 343                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 344                         System.out
 345                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createBooking");
 346                 } catch (Exception exc) {
 347                         exc.printStackTrace();
 348                 } finally {
 349                         db.close();
 350                 }
 351                 return book;
 352         }
 353
 354         /**
 355          * This method existing owners
 356          *
 357          */
 358         public Vector<Owner> getOwners() throws RemoteException, Exception {
 359
 360                 if (c.isDatabaseLocal() == false)
 361                         openSDB();
 362                 else
 363                         openDB();
 364
 365                 try {
 366                         Owner proto = new Owner(null, null, null);
 367                         ObjectSet<Owner> result = db.queryByExample(proto);
 368                         Vector<Owner> owners = new Vector<Owner>();
 369                         while (result.hasNext())
 370                                 owners.add((Owner) result.next());
 371                         return owners;
 372                 } finally {
 373                         db.close();
 374                 }
 375         }
 376
 377         public Vector<RuralHouse> getAllRuralHouses() throws RemoteException,
 378                         Exception {
 379
 380                 if (c.isDatabaseLocal() == false)
 381                         openSDB();
 382                 else
 383                         openDB();
 384
 385                 try {
 386                         RuralHouse proto = new RuralHouse(null, null, null, null, null);
 387                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 388                         return new Vector<RuralHouse>(result);
 389                 } finally {
 390                         db.close();
 391                 }
 392         }
 393
 394         public boolean existsOverlappingOffer(RuralHouse rh, Date firstDay,
 395                         Date lastDay) throws RemoteException, OverlappingOfferExists {
 396
 397                 if (c.isDatabaseLocal() == false)
 398                         openSDB();
 399                 else
 400                         openDB();
 401
 402                 try {
 403
 404                         RuralHouse rhn = (RuralHouse) db.queryByExample(
 405                                         new RuralHouse(rh.getHouseName(), null, null, null, null))
 406                                         .next();
 407                         if (rhn.overlapsWith(firstDay, lastDay) != null)
 408                                 throw new OverlappingOfferExists();
 409                         else
 410                                 return false;
 411                 } finally {
 412                         db.close();
 413                 }
 414         }
 415
 416         public static ObjectContainer getContainer() {
 417                 return db;
 418         }
 419
 420         public void close() {
 421                 db.close();
 422                 System.out.println("DataBase closed");
 423         }
 424
 425         public String toString() {
 426                 return "bookingNumber=" + bookingNumber + " offerNumber=" + offerNumber;
 427         }
 428
 429         /**
 430          * @param usr
 431          * @param ps
 432          * @return
 433          * @throws RemoteException
 434          * @throws Exception
 435          */
 436         public Vector<Account> getAccount(Account proto) throws RemoteException,
 437                         Exception {
 438
 439                 if (c.isDatabaseLocal() == false)
 440                         openSDB();
 441                 else
 442                         openDB();
 443
 444                 try {
 445                         ObjectSet<Account> result = db.queryByExample(proto);
 446                         Vector<Account> accounts = new Vector<Account>();
 447                         while (result.hasNext())
 448                                 accounts.add((Account) result.next());
 449                         return accounts;
 450                 } finally {
 451                         db.close();
 452                 }
 453         }
 454
 455         /**
 456          * @param rh
 457          */
 458         public boolean storeRuralHouses(RuralHouse rh) {
 459
 460                 if (c.isDatabaseLocal() == false)
 461                         openSDB();
 462                 else
 463                         openDB();
 464
 465                 boolean stored = false;
 466                 RuralHouse house = new RuralHouse(rh.getHouseName(), null, null, null,
 467                                 null);
 468                 try {
 469                         ObjectSet<RuralHouse> result = db.queryByExample(house);
 470                         if (result.isEmpty()) {
 471                                 Owner ow = (Owner) db.queryByExample(rh.getOwner()).get(0);
 472                                 rh.setOwner(ow);
 473                                 ow.addRuralHouse(rh);
 474                                 db.store(rh);
 475                                 db.commit();
 476                                 stored = true;
 477                         } else {
 478                                 db.delete(result.get(0));
 479                                 db.store(rh);
 480                                 db.commit();
 481                                 stored = true;
 482                         }
 483                 } finally {
 484                         db.close();
 485                 }
 486                 return stored;
 487         }
 488
 489         public void removeHouse(RuralHouse rh, Owner owner) {
 490
 491                 if (c.isDatabaseLocal() == false)
 492                         openSDB();
 493                 else
 494                         openDB();
 495                 try {
 496                         ObjectSet<Owner> result = db.queryByExample(owner);
 497                         ObjectSet<RuralHouse> rhs = db.queryByExample(rh);
 498                         if (!rhs.isEmpty()) {
 499                                 Owner found = result.get(0);
 500                                 found.getRuralHouses().remove(rhs.get(0));
 501                                 db.delete(rhs.get(0));
 502                                 db.store(found);
 503                                 db.commit();
 504                         }
 505                 } catch (Exception exc) {
 506                         exc.printStackTrace();
 507                 } finally {
 508                         db.close();
 509                 }
 510
 511         }
 512
 513         public Vector<RuralHouse> getRuralHouses(Owner ow, String name,
 514                         String town, int nBed, int nKit, int nBath, int nPark, int nLiv) {
 515                 HouseFeatures fea = new HouseFeatures(nBed, nKit, nBath, nLiv, nPark);
 516                 RuralHouse rh = new RuralHouse(name, ow, null, town, fea);
 517                 if (c.isDatabaseLocal() == false)
 518                         openSDB();
 519                 else
 520                         openDB();
 521
 522                 try {
 523                         ObjectSet<RuralHouse> result = db.queryByExample(rh);
 524                         Vector<RuralHouse> ruralHouses = new Vector<RuralHouse>();
 525                         while (result.hasNext())
 526                                 ruralHouses.add(result.next());
 527                         db.close();
 528                         return ruralHouses;
 529                 } catch (NullPointerException e) {
 530                         return null;
 531                 }
 532
 533         }
 534
 535         public boolean addAccount(Account acc) {
 536                 if (c.isDatabaseLocal() == false)
 537                         openSDB();
 538                 else
 539                         openDB();
 540
 541                 try {
 542                         ObjectSet<Account> result = db.queryByExample(new Account(acc
 543                                         .getUsername()));
 544                         if (result.isEmpty()) {
 545                                 db.store(acc);
 546                                 db.commit();
 547                                 return true;
 548                         }
 549                 } catch (Exception exc) {
 550                         exc.printStackTrace();
 551                 } finally {
 552                         db.close();
 553                 }
 554                 return false;
 555         }
 556
 557         public boolean removeAccount(Owner own) {
 558                 if (c.isDatabaseLocal() == false)
 559                         openSDB();
 560                 else
 561                         openDB();
 562
 563                 try {
 564                         ObjectSet<Account> result = db.queryByExample(new Account(own));
 565                         if (!result.isEmpty()) {
 566                                 db.delete(result.get(0));
 567                                 db.commit();
 568                                 return true;
 569                         }
 570                 } catch (Exception exc) {
 571                         exc.printStackTrace();
 572                 } finally {
 573                         db.close();
 574                 }
 575                 return false;
 576         }
 577
 578         public void acceptBooking(Offer of) {
 579                 Offer off = new Offer(of.getOfferNumber(), new RuralHouse(of
 580                                 .getRuralHouse().getHouseName(), null, null, null, null), null,
 581                                 null, 0);
 582                 if (c.isDatabaseLocal() == false)
 583                         openSDB();
 584                 else
 585                         openDB();
 586
 587                 try {
 588                         ObjectSet<Offer> result = db.queryByExample(off);
 589                         db.delete(result.get(0));
 590                         RuralHouse rh = result.get(0).getRuralHouse();
 591                         of.setRuralHouse(rh);
 592                         rh.getAllOffers().remove(result.get(0));
 593                         rh.getAllOffers().add(of);
 594                         db.store(rh);
 595                         db.close();
 596
 597                 } catch (Exception e) {
 598                         e.printStackTrace();
 599                         ;
 600                 }
 601         }
 602
 603         public void removeBooking(Booking b) {
 604                 if (c.isDatabaseLocal() == false)
 605                         openSDB();
 606                 else
 607                         openDB();
 608                 try {
 609                         Booking book = new Booking(b.getBookNumber(), new Offer(b
 610                                         .getOffer().getOfferNumber(), new RuralHouse(b.getOffer()
 611                                         .getRuralHouse().getHouseName(), null, null, null, null),
 612                                         null, null, 0), b.getClient(), b.getBookDate());
 613
 614                         ObjectSet<Booking> result = db.queryByExample(book);
 615                         Offer of = result.get(0).getOffer();
 616                         of.getBookings().remove(result.get(0));
 617                         db.store(of);
 618                         db.commit();
 619                 } catch (Exception e) {
 620                         e.printStackTrace();
 621                 } finally {
 622                         db.close();
 623                 }
 624
 625         }
 626 }